Space heater support



Aug. 16, 1966 D. w. HARTZELL 3,266,479

7 SPACE HEATER SUPPORT Filed April 25, 1964 2 Sheets-Sheet l IN VEN TOR.Dana/d W Harfzel/ BY UAM 10m 9M 6m 5 ATTORNEYS Aug. 16, 1966 Filed April25, 1964 D. W. HARTZELL SPACE HEATER SUPPORT 2 Sheets-Sheet 2 IN VENTOR. Dona/d W //2//ze// ATIURNEYS United States Patent 6 SPACE HEATERSUPPORT Donald W. I-Iartzell, Centralia, IlL, assignor to Lear SieglerInc, Centralia, Ill., a corporation of Delaware Filed Apr. 23, 1964,Ser. No. 361,976 9 Claims. (Cl. 126-85) The present invention relates toapparatus for supporting a space heater adjacent to a window and forventing the heater and taking air into the heater through the Windowwith a minimum of heat loss.

Heretofore, the installation of a space heater in a relatively permanentmanner, ordinarily required the work of an expert. Installation wasoften complicated and required structural work in the room or building.Further, the apparatus for installing the heater tended to becomplicated, costly and bulky. Prior efforts to alleviate these problemshave not been particularly successful.

It is accordingly an object of the present invention to provide a noveland improved apparatus for the installation of a spaceheater. It is amore specific object to provide novel and improved installationapparatus for supporting aspace heateradjacent to a window and forventing the heater and taking air into the heater through the windowwith a minimum of heat loss through the window.

Another object is to provide installation apparatus which 'permits rapidand easy installation of a heater in different size windows. It is afurther object of this invention to provide installation apparatus ofthe type described which includes improved venting and air intake meansfor theheater. It is still another object of the invention to providesimple, economical and durable installation apparatus for securing aheater at a window.

Various other objects and advantages of the invention will becomeapparent from the following description and the drawings, wherein:

FIGURE 1 is a front perspective view of a space heater operablysupported at the lower part of a doublesash, box-frame type window;

FIGURE 2 is an enlarged side sectional view, with parts broken away andin section, of the internal portion of a space heater such as shown inFIGURE 1, of installation apparatus for supporting the heater adjacentto the window and for venting the heater and taking air into the heaterthrough the window, and of portions of the window construction, theinstallation apparatus embodying various features of the invention;

FIGURE 3 is a perspective view in reduced size of installation apparatusand window construction such as shown in FIGURE 2; and

FIGURE 4 is an enlarged exploded elevational view of the heater, theinstallation apparatus, and a portion of the window construction.

Briefly, the illustrated installation apparatus is adapted to support aspace heater adjacent to a window and to vent the heater and take airinto the heater through the window with a minimum of heat loss throughthe window. The installation can be done rapidly, simply and easily.

In the drawings, a space heater is supported just inside a double-sash,box-frame type window 12 by installation apparatus 14. The heater 10 isvented out of the window 'and aso receives a supply of fresh air throughthe window. The window is open to provide an opening to receive theinstallation apparatus 14, which includes an insulator plate 16 that issecured in the window opening and substantially covers the opening. Theapparatus 14 also includes outlet or venting conduit means 18 and inletor air intake conduit means 20 which are secured to and extend throughthe insulator plate 16.

Support means 22 attach to the frame of the window 12 and support theheater 10 in position on the inside of the window.

3 and supporting the'heater 10.

. of three sections which permit ice At the rear or sideof the heaterfacing the-Window there is an outlet or outlet por1j24 and an inlet orinlet port 26 disposed around the outlet. The conduits 18 and 20 areconnected respectively to the outlet 24 and the inlet 26 of the heater,with the venting conduit 18 disposed inside the air intake conduit 20.To facilitate the connection of the internal venting conduit 18 to theoutlet 26, the illustrated external inlet conduit 20 is retractable.

Thus, a simple yet highly effective construction of support, venting andair intake apparatus is provided for the heater.

The Window 12 shown in the drawings includes a generally rectangularframe 30 disposed in a vertical wall 32. An upper window 34 is slideablyreceived in vertical outer channels 36 at the sides of the frame 30, anda lower window 38 is similarly received in vertical inner channel 44) inthe sides of the frame 30. The lower window 38 may be lifted or raisedto a position such as shown in FIGURE 2. This creates the opening orspace 42 wherein that portion of the installation apparatus 14 whichvents and delivers fresh air to the heater is disposed. The frame 30includes an inner sill or ledge 44 to which the means 22 that supportthe heater 10 are secured. The window sill 44 extends from side to sideof the window 12 inwardly of the channels ,40. It presents a generallyrectangular elevated bar haiing a level upper surface and vertical'innerand outer surfaces.

The support means 22 includes a generally rectangular vertical hangerplate 46 having an outwardly extending right-angle flange 48 disposedalong its upper edge. The flange 48 rests upon the window sill 44 andadjustable spacers 50 on the lower portion of the hanger plate 46 may beextended or withdrawn to contact the vertical wall 32 and position thehanger plate 46 generally parallel to that wall in a substantiallyvertical alignment. The hanger plate 46 is secured to the sill 44 by aclamp bar 54. The illustrated clamp bar is a generally elongatedhorizontally disposed plate which is positioned over the flange 48 ofthe hanger plate 46. The bar 54 is provided with a right-angle lip orflange 56 along its outer edge which extends downwardly on the outsideof the outer vertical surface of the window sill 44. The hanger plate 46and the bar 54 are secured together by suitable means such as screws 58with the plate 46 and the vertical flange 56 generally secured againstthe inner and outer vertical faces of the sill 44, as seen best inFIGURE 2, to firmly support the hanger plate 46 from the sill 44. Thevertical edges of the illustrated hanging plate 46 are turned uponthemselves in front of the plate to provide vertical slides or grooves52, as shown best in FIGURE 4, for receiving The illustrated insulatorplate 16 is disposed in the space 42 created by the partially openedlower window 38, as seen best in FIGURE 2. The illustrated plate 16 is agenerally rectangular vertically oriented plate made up the plate to beextended and contracted to different widths. The illustrated plate 16includes a center section 60 and a pair of end sections 62. The centersection 60 has its upper and lower edges turned transversely to theplate and then toward the center of the plate to provide upper and lowergrooves or races. Slideably received in the races from either side ofthe center section 60 are the end sections 62. The vertical side edgesof each end section 62 are turned at right angles to the plate 16 toprovide a securing flange 66 at either side of the insulator plate 16.The flanges 66 are secured in the lower portions of the inner channels40 by suitable means such as screws 67 (FIGURE 4) to secure in place theinsulator plate 16. The insulator plate thus extends across the width ofthe window 12 to cover the opening 42. In the illustrated structure,insulation such as molded rubber seal strips 68 are dis- 3 posed alongthe upper and lower edges of the insulator plate 16 to prevent the lossof heat around the edges of the plate. As shown in FIGURE 2, the lowerwindow 38 is brought down to bear against the upper edge ofthe insulatorplate 16 and the upper insulator strip 68 provides a thermoseal betweenthe plate and the window.

The insulator plate 16 is provided with an aperture 70 for the ventingand air intake conduits 18 and 20 as will be described below. Morespecifically, the center section 60 of the illustrated plate 16 isprovided with a circular hole or opening and the inner vertical edge ofeach of the end sections 62 is provided with a semicircular cutout 61 soproportioned and aligned that if the end sections 62 are contracted, thesemicircular cut-outs and the circular hole are in general alignment sothat the hole is not blocked. FIGURE 3 illustrates the extension of theend section 62 to the right, as viewed in that figure, to fit aparticular wind-ow size.

Secured to the rear or outwardly disposed surface of the insulator plate16 is a generally rectangular insulator 'box or box frame 77 that isgenerally centered around the aperture 70. The box or box frame 77includes an upper, a lower, and two side walls which all extendrearwardly from the rear surface of the insulator plate 16 and aregenerally perpendicular to that rear surface. The edges of these wallsare turned centrally inwardly to form a generally annular lip or flange79 for the box frame 77.

Insulation may also be provided between the upper and lower windows, asby means of a square felt strip 72 as shown in FIGURE 2.

The heater is supported in front of the window 12 as shown in thedrawings. The inner or internal portion of. the heater 74 is providedwith vertical mounting angles 76, shown best in FIGURE 4, which aresecured to the rear of the inner portion and are adapted to be receivedin the slides 52 of the hanging plate 46 to position and support theheater relative to the window. Suitable stop means, which may beadjustable if desired, but which are not specifically shown in thedrawings, are used to secure the heater at the desired height. As seenbest in FIG- URE 2, the heater is positioned with outlet and inlet 24and 26 in general alignment with the aperture 70 in the insulator plate16. The outlet 24 through which the hot exhaust products of combustionemerge from the heater has a cylindrical collar 78 which extendsrearwardly of the heater in the direction of the window and theinsulator plate 16. The inlet 26 for taking cooler fresh air into theheater is disposed around the outlet 24 and is provided with a similarcylindrical collar 80. The inlet collar 80 is generally concentricallydisposed around the collar 78, and extends outwardly from the rear ofthe heater inner portion 74 a somewhat shorter distance than does col-As best shown in FIGURE 4, the vent or outlet conduit 18, which isdisposed within the intake conduit 20, is comprised, in the illustratedstructure, by a pair of telescoped pipe sections having generallycircular cross sections. The smaller pipe section is designated 82 andthe larger pipe section is designated 84. Thus, the outlet conduit 18may be extended or contracted lengthwise by moving the sections relativeto one another. At the outsection 84, the vent conduit is secured to avent cap assembly 88.

The illustrated vent cap assembly 88 is comprised of four generallyvertical rectangular plates or baffles 90, 91, 92 and 93 which aresecured together in parallel spaced-apart relation and in generalalignment. The innermost bafile plate 93, which is the baffle plate towhich the vent conduit 18 is secured, is provided with a circular centerhole or aperture 96 that has an inwardly directed annular flange 98. Theouter end 86 of the conduit 18 fits over and is secured to the flange98. Marginal portions 99 of the baflles 90, 91, 92 and 93 are offset toprovide a more indirect discharge of the hot gases and material from theheater and to more effectively block incoming drafts. The twointermediate baflles 91 and 92 are generally similar to baffle 93, butare provided with somewhat larger center apertures 100- and 101 (FIG-URE 2). The end or outermost bafile 90 is similar to the others but itdoes not have an aperture. The other or inward end 102 of the ventconduit 18, that is provided by the inward end of the smaller pipesection 82, is disposed around the outlet collar 78 of the heat-er.Thus, the hot gases and exhaust material from the heater pass throughthe outlet 24 of the heater, through the pipe sections 82 and 84comprising the vent conduit 18 of the installation apparatus 14, and arediffused and diverted, particularly by the end baflle 90, to passindirectly into the surrounding air. The vent cap assembly 88 retardsundesired flow of cool outside air back through the vent conduit 18toward or even into the heater.

The air intake conduit 20 is disposed around the vent or outlet conduit18 and is comprised, in the illustrated structure, of a pair oftelescoped pipe sections having a generally circular cross section. Thelarger pipe section is designated 104 and the smaller one is designated106. The two sections are movable relative to one another to extend orcontact the length of the intake conduit 20.

The inner end 107 of the air intake conduit 20, or more particularly theinner end of the smaller pipe section 106, is connected to the collar 80of the heater inner portion 74, and thereby communicates with the intake26 of the heater. The outer end 108 of the air intake conduit 20, ormore particularly the outer end of the larger pipe section 104, isconnected to an inlet assembly 110. The inlet assembly 110 which, likethe air intake conduit 20, is disposed around the vent conduit 18,includes generally a cylindrical intake grating 112 having a transverserectangular annular flange plate 114 and 118 at either end. The outerend 108 of the conduit 20 is connected to the inner end of the intakegrating 112. The plate 114, which is outermost or furthest from theheater, is disposed just inwardly of the innermost baflle 93 of the ventcap assembly 88 and is secured to that assembly by means of bolts 94(FIGURE 2). The plate 118, which is innermost or closest to the heater,is of approximately the dimensions of the square box frame 77 and issecured to the frame along the annular flange 79 so as to provide anouter or rear wall for the box or box frame 77. Thus, fresh air fromoutside enters the intake grating 112, passes through the pipes 104 and106 that comprise the intake conduit 20, and enters the heater throughthe inlet 26.

The connection of the plate 118 to the frame 77 also fixes the position,in a direction normal or perpendicular to the window wall 32, of theconduits 18 and 20, the vent cap assembly 88, and the air intakeassembly 110, except for the telescoped smaller pipe sections 82 and106. The telescoped pipe sections 82 and 106 remain longitudinallymovable toward or away from the heater to provide the appropriateconnection with the intake and outlet collars 78 and 80 of the heater.The enclosure defined by the box or box frame 77 and the plate 118 thusprovides a ring of air or insulating medium around the conduits 18 and20 adjacent their outside or outer junction with the insulator plate 16.

After suitable connections are made from the heater to a source of gas(not shown), the outside cabinet 122 is placed upon the heater innerportion 74 as shown in FIGURE 1 and the heater is ready for operation.

As noted above, the operation of the heater is quite simple insofar asthe venting and induction of material is concerned. The hot material andgases pass out of the outlet 24 of the heater, through the vent conduit18 and out between the baflles 90, 91, 92 and 93 of the vent capassembly 88. The cool outside air is at the same time drawn in throughthe grating 112, and passed through the intake conduit 20. This incomingair in the intake conduit 20 thus moves through the area surroundingheated outlet conduit 18 to the intake 26 of the heater and is heated,whereby more effective and efiicient operation of the heater isprovided.

The adjustable length of the conduits 18 and 20, and particularly theintake conduit 20, are of decided advantage in effectively securing theheater and the apparatus in location in the window. It permits theassembly made up of the conduits 18 and and the insulator plate 16 to besecured in desired location, i.e., seated in the Window frame channels40, to provide desirable insulation characteristics and the like,despite variations in window dimensions. Specifically, except for themovable portions of the conduits 18 and 20 the assemb=ly of parts arefixed against movement in a direction transverse to the plane of thewindow wall 32. The heater 10 is also fixed against movement in thisdirection and positioned by the location of the front edge of the windowsill 44 which determines the location of the hanger plate 46 upon whichthe heater is supported. However, the distance between the inside edgeof the window sill 44 and the location of the channels 40 may differfrom window to window. Using conduits of adjustable length permits readyinstallation of the heater together with the desired fixed installationof the bulk of the assembly in the manner described -above., Inthis'connection, it would not generally be desirable to make the entireconduits movable relative to the plate since it is generally preferredto have the conduits fixed and relatively sealed to adjacent parts wherethe conduit and these adjacent parts are exposed to the outside tominimize leakage and heat loss.

Further, it provides for convenient fabrication to have the larger,externally disposed inlet conduit 20 retractable so that it may be movedout of the way while the smaller internally disposed vent conduit 18 isconnected to the heater. Then the external inlet conduit 20 may merelybe extended and itself connected to the heater.

Thus, the illustrated installation apparatus '14 provides simple,practical and effective means for supporting a space heater adjacent awindow and using the window to vent the heater and also to take in airfor the heater, all with a minimum of heat leakage or loss. Theillustrated structure also provides for particularly advantageousstructural features which permit ready and efficient installation of aspace heater in different windows of a variety of diiterent dimensions.i

Various changes and modifications may be made in the illustratedstructure without departing from the spirit and scope of the invention.Various features of the invention are set forth in the following claims.

What is claimed is:

1. Installation apparatus for supporting, at a window in an exteriorwall of an area to be heated, a space heater having an outlet and aninlet for venting the heater and providing air to the 'heater throughthe opening provided by the window being open, said apparatuscomprising:

(a) insulator means adapted to be secured to the wall adjacent to thewindow opening so as to substan ti-ally close the opening,

(b) support means adapted to be secured to the wall adjacent to thewindow and adapted to support the space heater with the outlet and inletof the heater adjacent to said insulator means, and

(c) inlet conduit means and outlet conduit means secured to andextending through said insulator means and adapted to connect,respectively, to the inlet and outlet of the heater to provide two-waycommunication between the heater and the opposite side of said insulatormeans.

2. Installation apparatus for supporting, at a window of an exteriorwall of an area to be heated, a space heater that has an outlet and aninlet and for venting the heater and providing air to the heater throughthe opening provided by the window being open, said apparatuscomprising:

(a) an insulator plate adapted to be secured to the wall adjacent to thewindow opening so as to sub- 1 stantially cover the opening,

(b) an elongated inlet conduit and an elongated outlet conduit securedto and extending through said insulator plate to provide two-waycommunication between opposite sides of said plate, said outlet conduitbeing disposed within said inlet conduit, and

(c) support means adapted to be secured to the wall within the area andadjacent to the window opening, said support means being' adapted tosupport the space heater with the outlet and inlet of the heaterpositioned for connection, respectively, with the ends of the outlet andinlet conduits disposed within the area.

3. Installation apparatus for supporting, at a window of a room wall, aspace heater that has an outlet and an inlet and for venting the heaterand providing air to the heater through the opening provided by thewindow being open, said apparatus comprising:

(a) an insulator plate adapted to be secured to the wall adjacent tothewindow opening so as to substantially cover the opening,

(b) an elongated inlet conduit and an elongated outlet conduit securedto and extending generally horizontally through said insulator plate toprovide twoway communication between the points spaced substantiallyfrom either side of said plate, said out let conduit being disposedwithin said inlet conduit, and

(c) support means adapted to be secured to the wall Within the room andadjacent to the window opening, said support means being adapted tosupport the space heater with the outlet and inlet of the heater ingenerally direct alignment, respectively, with the ends of the outletand inlet conduits disposed within the room.

4. Installation apparatus for supporting, at a window of a room wall, aspace heater that has its inlet for cooler air disposed around itsoutlet for warmer exhaust gases, the heater being supported adjacent tothe window which is of the generally rectangular box-frame double-sashtype wherein two windows are movably supported in vertical side channelsof a window frame, one window being open to provide an opening toaccommodate venting and an intake means for the heater, saidinstallation apparatus comprising:

(a) a generally rectangular insulator plate adapted to be secured at oneend of the channels of the open window so as to substantially cover theopening defined by the frame and that open window,

(b) support means adapted to be secured to the window frame and to theheater to support the space heater with its outlet and inlet adjacent tosaid insulator plate,

(c) an inlet conduit and an outlet conduit secured to and extendingthrough said insulator plate to provide two-Way communication betweenthe two sides of said plate, said outlet conduit being disposed withinsaid inlet conduit, said outlet and inlet conduits adapted respectivelyto connect to the outlet and inlet of the heater,

whereby relatively hot exhaust gases from the heater are vented outsidethe room and air coming into the heater is pre-warmed and an effectiveseal is provide-d to prevent unnecessary dissipation of heat from theinterior of the room.

5. Installation apparatus for supporting, at a window of an exteriorwall of a room, a space heater that has its inlet for receiving cooleroutdoor air disposed around its outlet for warmer exhaust gases, theheater being supported adjacent to the window which is of the box-framedouble-sash type wherein two windows are movably sup- Y ported invertical side channels of the window frame, the lower window being opento provide an opening to accommodate Venting and intake means for theheater, said installation apparatus comprising:

(a) an insulator plate adapted to be secured at the lower portion of thechannels for the open lower window so as to substantially cover theopening defined by the frame and that open lower window,

(b) an elongated inlet conduit and an elongated outlet conduit securedto and extending through said insulator plate to provide two-waycommunication between the two sides of said plate, said outlet conduitbeing disposed within said inlet conduit, each of said conduits havingone of its ends spaced substantially inwardly and one of its ends spacedsubstantially outwardly of said insulator plate,

() support means adapted to be secured to the window frame and to theheater to support the space heater with its outlet and inlet in generalalignment respectively with the inwardly spaced ends of the outlet andinlet conduits, said outlet and inlet conduits adapted to be operativelyconnected, respectively, to said outlet and inlet of the heater,

whereby relatively hot exhaust gases from the heater are vented to theoutdoors and cooler air from the outdoors coming into the heater ispre-warmed and an effective seal is provided to prevent unnecessarydissipation of heat from the interior of the room.

6. Adjustable installation apparatus -for supporting a Space heater at awindow in an exterior wall of an area to be heated, the window beingopen to provide an opening to accommodate means that providecommunication between the heater and the region outside of the wall,said installation apparatus comprising:

(a) an insulator plate adapted to be secured in fixed relation to thewall so as to substantially cover the window opening,

(b) support means adapted to be secured in fixed relation to the walland to the. heater to support the space heater in the area to be heatedand adjacent to said insulator plate,

(c) an adjustable conduit secured to and extending through saidinsulator plate to provide communication between the heater and theopposite side of said insulator plate, said conduit comprising a firstelongated pipe section secured to said plate and having one end disposedinwardly of said plate and one end disposed outwardly of said plate,said conduit also comprising a second elongated pipe section that is intelescoped engagement with the inwardly disposed end of said first pipesection for longitudinal movement relative to said first pipe section,said second pipe section being adapted to connect to said heater.

7. Installation apparatus for mounting a space heater adjacent to awindow that is located in an exterior wall of the area to be heated, andfor venting the heater and taking in air for the heater through theopening provided by the window being open, said heater having an inletport and an outlet port, one port being smaller in section disposedwithin the other, said apparatus comprising:

(a) means adapted to support the heater adjacent to the window opening,

(b) an insulator plate adapted to be secured to the wall so as tosubstantially cover the window opening, and

(c) a pair of elongated conduits secured to and extending through saidplate, one conduit being smaller in section than the other and beingdisposed within the other, the ends of said conduits in the area to beheated being adapted for connection to one of the ports of the heater,both of said conduits being fixed to said plate against longitudinalmovement it but the larger conduit being longitudinally retractable andextendable to permit ready connection of first the smaller conduit tothe smaller port of the heater and then the larger conduit to the largerport of the heater.

8. Installation apparatus for supporting, at a window in an exteriorWall of an area to be heated, a space heater that has a first port thatis larger in section and is disposed around a second port, the windowbeing open to provide an opening to accommodate means that connect theports of the heater to the region outside of the wall, said installationapparatus comprising:

(a) an insulator plate adapted to be secured to the wall so as tosubstantially cover the window opens,

(b) support means adapted to be secured to the wall and to the heater tosupport the space heater in the area to be heated and with its first andsecond ports facing said insulator plate,

(0) an elongated inlet conduit and an elongated outlet conduit securedto and extending through said insula tor plate to provide two-waycommunication between the two sides of said plate, one of said conduitsbeing larger and being disposed around the other of said conduits, thelarger of said conduits comprising a first elongated pipe section thatis secured to said plate and has its ends disposed respectively inwardlyand outwardly of said insulator plate, said larger conduit alsocomprising a second elongated pipe section that is in telescopedengagement with the inwardly disposed end of said first pipe section forlongitudinal movement relative to said first pipe section, said outletand inlet conduits each adapted to be operatively connected to one ofsaid ports of the heater.

9. Installation apparatus for supporting, at a window in an exteriorwall of an area to be heated, a space heater having an outlet and aninlet for venting the heater and providing air to the heater through theopening provided by the window being open, said apparatus comprising:(a) insulator means adapted to .be secured to the wall adjacent to thewindow opening so as to substantially close the opening,

('b) support means adapted to be secured to the wall adjacent to thewindow and adapted to support the space heater with the outlet and inletof the heater adjacent to said insulator means, said support meanscomprising a vertical hanger plate with a flange along its upper edge,said flange being adapted to rest upon the window sill, a clamp barhaving a flange adapted to be positioned against the outer verticalsurface of the window sill, fastening means for;1 securing said clampbar to said hanger plate, an

(e) inlet conduit means and outlet conduit means secured to andextending through said insulator means and adapted to connect,respectively, to the inlet and outlet of the heater to provide two-waycommunication between the heater and the opposite side of said insulatormeans.

References Cited by the Examiner UNITED STATES PATENTS 2,582,066 1/1952Resek 126-85 2,871,778 2/1959 Br-ehm et al. 9894 2,964,034 12/1960Nordholt et al. 126-85 FOREIGN PATENTS 215,119 5/1961 Austria.

FREDERICK L. MATTESON, ]R., Primary Examiner. R. A. DUA, AssistantExaminer.

1. INSTALLATION APPARATUS FOR SUPPORTING, AT A WINDOW IN AN EXTERIORWALL OF AN AREA TO BE HEATED, A SPACE HEATER HAVING AN OUTLET AND ANINLET FOR VENTING THE HEATER AND PROVIDING AIR TO THE HEATER THROUGH THEOPENING PROVIDED BY THE WINDOW BEING OPEN, SAID APPARATUS COMPRISING:(A) INSULATOR MEANS ADAPTED TO BE SECURED TO THE WALL ADJACENT TO THEWINDOW OPENING SO AS TO SUBSTANTIALLY CLOSE THE OPENING, (B) SUPPORTMEANS ADAPTED TO BE SECURED TO THE WALL ADJACENT TO THE WINDOW ANDADAPTED TO SUPPORT THE SPACE HEATER WITH THE OUTER AND INLET TO SUPPORTTHE ADJACENT TO SAID INSULATOR MEANS, AND (C) INLET CONDUIT MEANS ANDOUTLET CONDUIT MEANS SECURED TO AND EXTENDING THROUGH SAID INSULATORMEANS AND ADAPTED TO CONNECT, RESPECTIVELY, TO THE INLET AND OUTLET OFTHE HEATER TO PROVIDE TWO-WAY COMMUNICATION BETWEEN THE HEATER AND THEOPPOSITE SIDE OF SAID INSULATOR MEANS.